κολαστής
From LSJ
καὶ λέγων ὅτι Πεπλήρωται ὁ καιρὸς καὶ ἤγγικεν ἡ βασιλεία τοῦ θεοῦ· μετανοεῖτε καὶ πιστεύετε ἐν τῷ εὐαγγελίῳ → declaring “The time has been accomplished and the kingdom of God is near: start repenting and believing in the gospel!” (Μark 1:15)
English (LSJ)
οῦ, ὁ,
A chastiser, punisher, Ζεύς τοι κ. τῶν ὑπερκόπων ἄγαν φρονημάτων A.Pers.827, cf. S.OT1148, E. Heracl.388, Pl.Lg.863a, Epicur.Sent.34, Phld.Mort.17, etc.; κ. τῶν ἀδικούντων Lys.27.3, cf. Gorg.Fr.6; νόμοι κ. Critias 25.6 D.; tormentor, in Hades, Plu.2.567d (pl.).